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Abstract
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PURPOSE
This paper aims to investigate with strain-rate controlled uniaxial cyclic compression tests the softening behavior of concrete and its elastic stiffness degradation with increasing plastic straining.
Design/methodology/approach
Such tests at ambient temperature show that concrete exhibits the phenomenon of elastic stiffness degradation, which can be captured by damage-plasticity models.
Findings
The experimentally derived evolutions of the elastic stiffness with plastic strain confirm the suitability of the damage-plasticity modeling concept for concrete in compression at elevated temperatures and provide novel calibration data.
Originality/value
Temperature-dependent concrete models implementing this modeling concept are often used presently in structural fire engineering, despite the lack of experiment-based validation data.
Keywords:
Temperature, Finite element analysis, Damage, Compressive strength, Elastic moduli, Stiffness degradation
© Emerald Publishing Limited 2018
Language: en |